What kind of fuel delivery system does a 454 engine use?
This is an aspirated fuel delivery system with the addition of a mixture control system controlled by the ECM. It is not even close to the ECM used today. This fuel delivery system uses a mechanical fuel pump with the addition of an inline lift pump between this pump and gas tank on some systems to help prevent vapor-lock.
Is there a vacuum diagram for the 107?
There are many variables through the lengthy 107 manufacturing run and yet no one manual offers a vacuum diagram for all of the various systems. It is only through the kindness of other 107 owners that vacuum problems seem to be resolved.
What do you need to know about Mercedes Benz vacuum?
Easy to check with a hand vacuum pump and inexpensive to replace. 6) Charcoal Canister – more of the emissions controls. Soaks up the fuel vapors from the gas tank. 12) Exhaust pressure transducer – and still more emissions. This is a gateway that routes vacuum all over the place.
Where is the fuel pump located in a 454 engine?
Evaporation emission control system. The injector fuel control systems have a electric fuel pump, located in the fuel tank on the gauge sending unit. It pumps fuel to the throttle body and the direct fuel injector system through the fuel supply line and then through an in-line fuel filter.
This is an aspirated fuel delivery system with the addition of a mixture control system controlled by the ECM. It is not even close to the ECM used today. This fuel delivery system uses a mechanical fuel pump with the addition of an inline lift pump between this pump and gas tank on some systems to help prevent vapor-lock.
How does a single line fuel delivery system work?
On a single-line fuel delivery system fuel pressure is controlled by an internal, non-modulated fuel pressure regulator in the fuel pump module. The two-line fuel delivery system returns excess fuel to the tank using a return line, while a single-line fuel delivery system uses the same line.
When to know if your fuel delivery system is a problem?
Fuel-related loss of power complaints can be addressed by recording short- and long-term fuel trim numbers with a scan tool while road-testing the vehicle. If the short-term fuel trims begin to exceed about 20% at wide-open throttle (WOT) and stores a P0171 on in-line engines and a P0174 on V-type engines, the engine has a fuel delivery problem.
How does a pulse modulated fuel delivery system work?
Pulse-modulated fuel delivery systems, unlike conventional fuel delivery systems, control fuel pressure by changing fuel pump speed using a pressure sensor in the fuel injector rail. In most cases, the fuel control module changes the pulse width of the current being delivered to the fuel pump.